Non-parametric method of class

1. Two main characteristics of an object: properties and methods.

2. Method: The Access modifier method returns a value type method name () {

The body of the method

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3. No parameter method:

(1) There is a return value

For example: Public String play () {

The type of the return value is consistent with the return value type of the method

return "hehe";

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(2) No return value

For example: public void play () {

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4. With the parameter method: Mutual invocation is allowed between methods.

5. member variables and local variables:

(1) A member variable refers to a variable in a class

Can be used anywhere in the class! Java gives the member variable an initial value.

(2) A local variable refers to a variable in a method

Can only be used inside the method, out of the way is not in! Java does not assign an initial value to a local variable.

In the same class, a local variable has a higher precedence when the member variable has the same name as a local variable.

3.JavaDoc

Start with "/**" and End With "*\".

Electric Lion Category:
Public classautolion{String Color= "Yellow"; Color
/* Run * / Public voidrun () {System.out.println ("Running forward at 0.1 m/s.");}
/* Snatch Ball */publlic string Robball () {string ball= "Ball"; returnBall;}
/* Get color * / PublicString GetColor () {returncolor;}
/* Show Lion's features * / PublicString showlion () {return"This is a" +getcolor () + "Toy Lion!";}

Test class:
publicclass  testlion{  publicstaticvoid  main (string[] args);          =new  autolion ();      Create Autolion object   String Info=lion.showlion ();　　　　Call the method and receive the return value of the method   System.out.println (info);　　　　　　　　　　　　Display class Information   lion.run (); Call the way to run   System.out.println ("Grab a" + Lion.robball ();)//Call the ball method   

Non-parametric method of class